globalchange  > 气候变化事实与影响
DOI: 10.1175/JCLI-D-16-0388.1
Scopus记录号: 2-s2.0-85014563779
论文题名:
Sea level fingerprints in a region of complex earth structure: The case of WAIS
作者: Hay C.C.; Lau H.C.P.; Gomez N.; Austermann J.; Powell E.; Mitrovica J.X.; Latychev K.; Wiens D.A.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2017
卷: 30, 期:6
起始页码: 1881
结束页码: 1892
语种: 英语
Scopus关键词: Climate change ; Glaciers ; Viscous flow ; Antarctic regions ; Antarctica ; Earth structures ; Elastic lithosphere ; Elastic response ; Ice sheet ; Three orders of magnitude ; West antarctic ice sheets ; Sea level ; climate change ; Earth structure ; ice sheet ; melting ; prediction ; sea level change ; Antarctic Ice Sheet ; Antarctica ; West Antarctic Ice Sheet ; West Antarctica
英文摘要: Sea level fingerprints associated with rapid melting of the West Antarctic Ice Sheet (WAIS) have generally been computed under the assumption of a purely elastic response of the solid Earth. The authors investigate the impact of viscous effects on these fingerprints by computing gravitationally self-consistent sea level changes that adopt a 3D viscoelastic Earth model in the Antarctic region consistent with available geological and geophysical constraints. In West Antarctica, the model is characterized by a thin (~65 km) elastic lithosphere and sublithospheric viscosities that span three orders of magnitude, reaching values as low as approximately 4 3 1018 Pa s beneath WAIS. Calculations indicate that sea level predictions in the near field of WAIS will depart significantly from elastic fingerprints in as little as a few decades. For example, when viscous effects are included, the peak sea level fall predicted in the vicinity of WAIS during a melt event will increase by about 20% and about 50%, relative to the elastic case, for events of duration 25 and 100 yr, respectively. The results have implications for studies of sea level change due to both ongoing mass loss from WAIS over the next century and future, large-scale collapse of WAIS on centennial-to-millennial time scales. © 2017 American Meteorological Society.
资助项目: NSERC, Natural Sciences and Engineering Research Council of Canada ; NSF, National Science Foundation ; NSF, National Science Foundation ; NSF, National Science Foundation
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/49814
Appears in Collections:气候变化事实与影响

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作者单位: Earth and Planetary Sciences, Rutgers University, Piscataway, NJ, United States; Earth and Planetary Sciences, Harvard University, Cambridge, MA, United States; Earth and Planetary Sciences, McGill University, Montreal, QC, Canada; Bullard Laboratories, Department of Earth Sciences, University of Cambridge, Cambridge, United Kingdom; Department of Physics, University of Toronto, Toronto, ON, Canada; Earth and Planetary Sciences, Washington University in St. Louis, St. Louis, MO, United States

Recommended Citation:
Hay C.C.,Lau H.C.P.,Gomez N.,et al. Sea level fingerprints in a region of complex earth structure: The case of WAIS[J]. Journal of Climate,2017-01-01,30(6)
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